Core for radiators



F Q l v v b J. M. FEDDERS CORE FOR RADIATORS 2 Sheets-Sheet 1 Filed June 8. 1925 Feb. 15,1927.

. J. M. FEDDERS com". FOR RADIATORS Filed JuneB. 192s 2 Sheets-Sheet 2 Patented Feb. 15, 1927.

UNITED STATES 1,617,751 PATENT OFFICE.

JOHN M. FEDDERS, F BUFFALO, NEW YORK, ASSIGNOB TO FEDDERS MANNFAUIUR- ING COMPANY, INC., OF BUFFALO, NEW YORK, A CORPORATION OF NEW YORK.

com: non mm'roas.

Application filed June 8, 1925. Serial No.-85,711.

vision of a core for radiators of this character which is constructed of strips of sheet metal so that the water conduits are formed integrally with the webs forming the radiating webs, thereby securing the most intimate connections between the water tubes and rate. diating webs and obtaining the maximum radiating efficiency. Another purpose of this invention is to reduce the number of parts in the core and thus facilitate the handling of the same and reducing the cost of manufacture.

Further aims of this invention are to so organize the elements of the same that when assembled they produce a core having much greater strength and capable of resisting destructive shocks and strains more effectively than cores of the type heretofore known.

In the accom anylng drawings Fig. 1, is a Fragmentary front elevation of a radiator core embodying my invention.

Fig. 2, is a similar view of one section thereof.

Fig. 3, is a top plan view of one of the sections.

Fig. 4:, is a bottom plan view of the same.

Figs. 5 and 6 are fragmentary perspective views of a radiator section viewed from the top and bottom, respectively.

Fig. 7, is a vertical transverse section of the core section'taken on line 77, Fig. 3.

Figs. 8 and 9, are vertical longitudinal sections taken on. the correspondingly numbered lines in Fig. 3.

Fig. 10, is a fragmentary vertical section, on an enlarged scale, showing a plurality of superposed sections in an assembled position, the section being taken on line 10--10, Fig. 3. Y

Similar characters of reference indicate like parts throughout the several views.

This radiator core consists of a plurality of superposed sections which form together a plurality of vertical water conduits or tubes 20 and a plurality of horizontal air passages 21 extending from the front side to therear side of the radiator, whereby the air moving through these passages comes into contact with the exterior of the water tubes and carries away the heat from the water flowing through the tubes.

It is to be understood that in actual practwo this core is suitably provided at its upper and lower ends with the usual water headers which connect with the water cir culating system of the automobile engine for keeping the same from heating excessively.

Each core section is preferably constructed of a single sheet of metal which is bent so as to form a plurality of horizontal webs 22 which are arranged in a transverse row and with the longitudinal edges of the adjacent webs opposing each other, and a plurallty of vertical pleats which preferably pro ect downwardly from the webs and each of which has two longitudinal plies 23 having their corresponding pair of lower edges connected by a turn 24 while their corresponding pair of upper edges are connected, respectively, with the opposing edges of two adjacent webs.

Each pleat has each of its plies provided at suitable intervals with an outwardly bent portion forming one-half of a vertical tube 25 which is arranged opposite a similar half tube 25 in the companion ply of the respective pleat and forms therewith a whole or complete tube. The upper end of this tube is open and flush with the adjacent webs of the respective section. The lower end. of each tube is also opened by displacing the stock of metal forming the turn of the pleat at the lower ends of the two half tubes so as to open the lower end of the tube and cause this displaced metal to form downwardextensions 26 of the sides of the tube which terminate below the adjacent parts of the pleat turns. These extensions of each tube converge or taper slightly downward for a purpose which will pres- 6 ently appear.

The opposing edges of the webs on op 0- site sides of each pleat and the upper e ge portions of the plies of each pleat are spaced apart to form a longitudinal groove or channel 27 therebetween.

In assembling a plurality of sections of this character for making a radiator core, each section is placed on top of another section to form a'tier or pile of the desired height and the lower ends of the tubes of each section are inserted in the upper ends of the tubes of the next lower section, so as to form a telesco ic joint therewith, the assembling of the tn 3 for this purpose being facilitated by the tapering or conver in of the lower ends or extension of the to e si es, as shown at the center of'Fig. 10. At the same time the turned lower edge portions of the pleats between the tubes are engaged with the rooves 27 at the upper ends of the pleats 0 the next lower section, as shown right in Fig. 10. By thus interengaging the tubes and pleats of adjacent sections the same are reliably interlocked and firmly held against lateral displacement relative to each other.

When a suflioient number of sections have been thus assembled to produce a stack of the required height the same are connected so as to prevent vertical displacement relative to each other and also to form leaktight joints between the tubes of the several sections and also between the plies of each leat for preventing the escape of water aterally from the tubes.

The connection between the plies of the respective pleats of each section andbetWen the tubes of' each section and adjacent sections may be accomplished in various ways but preferably by coating the sheets of metal with solder or spelter before bending the same into the required sha e and then subjecting the assembled stac of sections to the heat of an oven, thereby causing the solder to melt and unite the contacting surfaces of the several units or sections, whereby lea'ktight joints are produced between them when the solder cools and .hardens.

In order to obtain air passages between adjacent lon itudinal rows of tubes which are substantially uniform in width and which are also tortuous lengthwise of the radiator the tubes are preferably so disposed that each tube in one longitudinal row is tubes in an adjacent row, as shown in Figs.

3 and 4. By this means the air in passing through the air passages is compelled to take a wavy or serpentlne course or path 'on its way through the core, whereby the same is caused to take up more heat from the water passing through the tubes than would be the case if the'air passages were perfectly straight fore and aft.

As shown in the drawings the longitudinal rows of tubes contain alternately three and four tubes, but this numbenmay vary as well as the height and width of the core to suit the radiating capacity desired.

For the purpose of positively limiting the extent which the tubes may telescope and the turns of the pleats on one section may enter the grooves of another section-the following means are provided Immediately below the bottom of some of the grooves 27 of each section and preferably at the front and rear ends of the same the companion plies of some of the pleats are provided with an interlocking recess 28 and roje'cti'on 29 so as to form an upwardly acing shoulder 30 which extends extirely across the lower end or bottom] of the groove, as shown at the left hand side of Fig. 10. The lower art of. each half tube may also be provide with an outwardly projecting circumferential bead 31 which engages with the up er end of the next lowertube into which 1t telescopes, as best shown in Fi e. 1 and 10, thereby positively limiting tie extent which the several sections can telescope relative to each other and insuring a core which is uniform in shape and con struction.

For the. purpose of increasing the radiating capacity of the core the webs areprovided with integral radiating fins'or lugs 32 which project downwardly therefrom and into the air passages so that the air passing through the same will en age these obstructions in itspath and there y compel the same to take up more of the heat in the water and dissipate the same into the surroundingatmosphere. The radiating fins are preferably formed by producing a plurality of openings 33 in each web and bending the stock of metal which is displaced during the formation of these holes so that the same re-' gering the several fin openings of each web in a direction lengthwise of the path of the air, whereby the air is caused to ricochet upon striking the fins which corresponds in.

arrangement to the companion holes, and thus materially aid in dispersing the heat which has been absorbed by the water passing through the tubes.

This construction of core for radiators lends itself admirably for producing a radiator having great strength and capacity at low cost inasmuch as the sheet metal sections can be stacked and assembled successively in their proper position on the pile immediately upon coming from the forming machine after which it is only necessary to heat the batch of sections in order to melt the solder coating and thus unite the several sections into one common mass and is ready for assembling with the water header and the enclosing casing.

I claim as my invention 1. In a radiator core havinga pluralityof water conduits and=a plurality of air pas-- sages arranged between adjacent water conduits, said core comprising a plurality of superposed sheet metal sections each of which is provided witha plurality of horizontal webs and a plurality of vertical pleats, the plies of each pleat having one air of their corresponding edges connecte by a turn and their other corresponding edges connected with the opposing edges of adjacent webs of the respective section, and each ply being provided with a half tube arranged opposite a similar half tube on the companion ply of the pleat and forming a whole tube therewith, and the tubes'of each section telescoping at the ends thereof adjacent to the turns of the respective pleats with those ends of the tubes of another section at the connec tion of the plies of the pleats with the webs thereof, and the opposing edgesof adjacent webs of each section and'the. adjacent parts of the respective plies being separated to form a groove therebetween which receives the turn of a pleat of another section between the tubes thereof.

2. A radiator core having a plurality of water conduits and a plurality of air passages arranged between adjacent water conduits, said core comprising a plurality of superposed sheet metal sections each of which is provided with a plurality of horizontal webs and a plurality of vertical pleats, the plies of each pleat having one pair of their corresponding edges connected by a turn in their other corresponding edges connected with the opposing edges of the adjacent webs of the respective sections, and each ply being provided with a half tube arranged opposite a similar half tube on the companion ply of the pleat and forming a whole tube therewith, and the tubes of each section telescoping at the ends thereof adjacent to the turns of the respective pleats with those ends of the tubes of another section at the connection of the plies of the pleats with the webs thereof, and the opposing edges of adjacent webs of each section and the adjacent parts of the respective plies being sep-' arated to form a groove therebetween which receives the turn of a pleat of another section between the tubes thereof and the plies of a pleat being provided with an interlocking recess and projection.

3. A radiator core having a plurality of water conduits and a plurality of air passages arranged between adjacent water conduits, said core comprising a plurality of superposed sheet metal sections each of which is provided with a plurality of horizontal webs and a plurality of vertical pleats, the plies of each pleat having one pair of their corresponding edges connected by a turn and their other corresponding edges connected with the opposing edges of adjacent webs of the respective sections, and

each ply being provided with a half tube arranged opposite a similar half tube on the com anion ply of the pleat and forming a who e tube therewith, and the tubes of each section telescoping at the ends thereof adjacent to the turns of the respective pleats with those ends of the tubes of. another section at the connection of the plies of the pleats with spective groove and is adapted to be engaged,

by the turn of a. pleat seated in said groove. 4. A radiator core having a plurality of water conduits and a plurality of air pas-1 sages arranged between adjacent water conduits, said core comprising a plurality of superposed sheet metal sections each of which is provided with a plurality of horizontal webs and a plurality of vertical pleats, the plies of each pleat having one pair of their corresponding edges connected y a turn and their other corresponding edges connected with the opposing edges of adjacent webs of the respective sections, and each ply being provided with a half tube arranged opposite a similar half tube on the companion ply of the pleat and forming a whole tube therewith, and the tubes of each section telescoping at the ends thereof adjacent to the turns of the respective pleats with those ends of the tubes of another section at the connection of the plies of the pleats with the webs thereof, and the opposing edges of adjacent webs'of each section and the adjacent parts of the respective plies being separated to form a groove therebetween which receives the turn of a pleat of another section between the tubes thereof and the plies of a pleat being provided with an interlocking recess and projection arranged immediately at the bottom of a groove between adjacent webs and forming a stop shoulder which extends across the bottom of the respective groove and is adapted to be engaged by the turn of a pleat seated in said grooveand external beads arranged on said tubes, and the beads of the tubes on one section engaging with the ends ofthe tubes of another section.

JOHN M. FEDDERS. 

